static void FinishUp(ref Function oldFunc, OrderFunction currentOrder, string currentMethod, Function newFunc, bool negativeNumber)
{
var realOld = new Function(oldFunc);
var actualMethod = methods.GetFunction(currentMethod);
double multiplier = negativeNumber ? -1 : 1;
oldFunc = (x) => { return(currentOrder.Invoke(realOld(x), actualMethod(newFunc(x * multiplier)))); };
}
public void RefreshView()
{
// filtering
var newView = _source.Where(e => IncludedFunction?.Invoke(e) ?? true);
// sorting
if (AscendingOrder)
{
newView = newView.OrderBy(e => OrderFunction?.Invoke(e));
}
else
{
newView = newView.OrderByDescending(e => OrderFunction?.Invoke(e));
}
_view.Clear();
_view.AddRange(newView);
CollectionChanged?.Invoke(this, new NotifyCollectionChangedEventArgs(NotifyCollectionChangedAction.Reset));
}